With that being said, did you know that Jamie Moyer is not the oldest player in Major League Baseball history? In fact, (technically) he's not even close. The oldest player to ever play in a Major League game was Hall of Fame pitcher, Satchel Paige. Paige played most of his career barn storming and in the Negro Leagues. Jackie Robinson made his MLB debut in 1947 and Paige made his debut the next season (1948) at 41 years young. He ended up becoming the oldest player to win the Rookie of the Year award. He played in 178 baseball games from 1948-1953, however, his last and final major league appearance came 12 years later... in 1965. He was 59 years old, allowed 1 hit and struck out 1 over 3 innings of work. Check out the box score.
If Jamie Moyer plays again next season, he will become just the 6th player in MLB history to play after 50 years old. Here are the other five players and how old the were once they retired:
Jack Quinn - 50 years old (pitcher)
Charley O'Leary - 51 years old (shortstop)
Jim O'Rouke - 54 years old (outfielder, Member Baseball Hall of Fame)
Minnie Minoso - 57 years old (left fielder)
Satchel Paige - 59 years old (pitcher, Member Baseball Hall of Fame)